Which process leads to a net movement of uncharged molecules from a low concentration to a higher concentration?

a. active transport
b. osmosis
c. facilitated diffusion
d. exocytosis


Ans: a. active transport

Biology & Microbiology

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Which event could result in speciation?

a. A bird develops a mutation that affects the shape of its feathers. b. A mouse is infected by a virus that changes its feeding cycle. c. A fish produces eggs with DNA transcription errors. d. A horse stretches to reach apples growing from a tall tree.

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A chi square test is done to determine _____

A. whether an organism with a dominant phenotype is homozygous or heterozygous B. whether an allele exhibits complete or incomplete dominance C. what the predicted outcome of a dihybrid cross will be D. how closely actual results of a cross match the expected results E. whether a trait is determined by one gene or many genes

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In meiosis the separated sister chromatids move to opposite poles of the cell during

A. metaphase I. B. metaphase II. C. anaphase I. D. telophase I. E. anaphase II.

Biology & Microbiology

In mushrooms, karyogamy occurs within the basidium

____________________ Indicate whether the statement is true or false.

Biology & Microbiology